Quiz: Electrical Engineering
Exam: UPSSSC JE
Topic: Utilization of electrical energy
Each question carries 1 mark.
Negative marking: 1/4 mark
Time: 10 Minute
Q1. Air is dehumidified
(a) cooling
(b) chemical absorption
(c) heating
(d) both (a) and (b)
Q2. The conditions conductive to comfort depends upon
(a) humidity
(b) temperature
(c) air purity
(d) All of above
Q3. The speed of steam locomotive is controlled by
(a) applying breaks
(b) gear box
(c) regulating steam flow to engine
(d) flywheel
Q4. The pulsating torque exerted by steam locomotive causes
(a) jolting and skidding
(b) hammer blow
(c) pitching
(d) all of the above
Q5. Steam engine drive
(a) has limited overload capacity
(b) is not clean drive
(c) is not suitable for urban or suburban service or for hauling heavy loads on steep gradients
(d) all of the above
Q6. Steam locomotive
(a) cannot be put into service at any moment
(b) cause considerable wear on the track
(c) need more repair and maintenance
(d) all of the above
Q7. Steam engine drive is not suitable for urban and suburban services as
(a) it is not clean drive
(b) coefficient of adhesion of steam locomotives is quite low
(c) steam locomotive cause considerable wear on the track
(d) steam locomotive has limited speed
Q8. Battery driven vehicles
(a) are easy to control and very convenient to use
(b) have low maintenance cost
(c) cause no pollution
(d) all of the above
Q9. Main traction systems used in India are those using
(a) steam engine locomotive
(b) diesel engine locomotive
(c) diesel electric locomotive
(d) All of the above
Q10. Battery operated trucks are used
(a) in power station
(b) for local delivery of goods in large town within maximum daily run up to 50-60 km
(c) in narrow gauge traction
(d) for main line service
Solutions
S1. Ans. (b)
Sol. Both cooling and chemical absorption are used to dehumidify.
S2. Ans. (d)
Sol. All factors are important.
S3. Ans. (c)
Sol. The speed of steam locomotive is controlled by regulating steam flow to engine.
S4. Ans. (a)
Sol. The pulsating torque exerted by steam locomotive causes jolting and skidding.
S5. Ans. (d)
Sol. All factors are true for steam engine
S6. Ans. (d)
Sol. Feature of Steam locomotive
- cannot be put into service at any moment
- cause considerable wear on the track
- need more repair and maintenance
S7. Ans. (b)
Sol. Steam engine drive is not suitable for urban and suburban services as coefficient of adhesion of steam locomotives is quite low .
S8. Ans. (d)
Sol. Benefits of Battery driven vehicles
- are easy to control and very convenient to use
- have low maintenance cost
- cause no pollution
S9. Ans. (d)
Sol. All locomotives are used in main traction system.
S10. Ans. (b)
Sol. Battery operated trucks are suitable for local delivery of goods in large town within maximum daily run up to 50-60 km.
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